JP5210781B2 - Lamp device for vehicle - Google Patents

Description

  The present invention relates to a vehicle lamp device using an LED light emitting element as a light emitter, and in particular, an inner lens is provided on the surface side of the LED light emitting element, thereby reducing the number of LED light emitting elements. The present invention relates to a vehicular lamp device in which a light beam emitted from a vehicular lamp device is formed in a uniform state over the entire lens surface.

A conventional vehicular lamp device, particularly a vehicular lamp device using an LED light emitting element, is formed by mounting a large number of LED light emitting elements on an LED substrate, as described in, for example, Japanese Patent Application Laid-Open No. 2008-71512. It is what has become. In this way, a plurality of light emitters are used to irradiate a predetermined light flux from the lens surface in an even state.
JP 2008-71512 A

  By the way, in the above-mentioned conventional one, in order to make the lens surface forming the vehicular lamp device emit light in a uniform state over the entire surface, it is necessary to provide a large number of LED light emitting elements in a uniform state on the back side of the lens. is there. As a result, the use of a large number of LED light-emitting elements may cause inconveniences such as an increase in product cost and an increase in the number of assembly steps. In order to solve such a problem, an inner lens is newly provided on the surface side of the LED light emitting element, thereby diverging the luminous flux emitted from the LED light emitting element as much as possible. It is an object (problem) of the present invention to provide a vehicular lamp device in which a light beam emitted from the device is formed in a uniform state over the entire lens surface with few LED light emitting elements. .

In order to solve the above problems, the following measures are taken in the present invention. That is, in the first invention according to the first aspect of the present invention, regarding a vehicle lamp device comprising a plurality of LED light-emitting elements, an LED substrate on which a plurality of LED light-emitting elements are mounted on one surface side, and the LED a mounting bracket which is formed at a predetermined plastic material including ABS resin be one which holds the substrate in a predetermined state, and the mounting bracket be one which accommodated in a state of being integrated with these LED substrates and mounting bracket Similarly, a housing formed of a predetermined plastic material , a holding portion that is provided in the housing and has a columnar shape, and holds the mounting bracket and the LED substrate in an integrated state, and the inner lens provided so as to cover the LED substrate at the holding portion, it becomes from the LED board and the mounting The holding portion for holding the racket integrally is formed of a hollow cylindrical columnar shape, and basically has a mounting hole formed in the mounting bracket in the cross-sectional shape around the upper end portion thereof. And having a predetermined gap between them, and a configuration in which a plurality of arc-shaped projecting portions formed so as to have appropriate rigidity and elasticity on the circumference are provided at equal intervals. I decided to take it.

  The first invention as claimed in claim 1 will be described. According to the present invention, by adopting the above configuration, that is, by newly providing an inner lens on the surface side of the LED light emitting element, the light emitted from the LED light emitting element is diffused in advance by this inner lens, thereby Finally, the luminous flux emitted from the vehicle lamp device can be formed in a wide and uniform state over the entire surface of the lamp lens. As a result, by using a relatively small number of LED light emitting elements, the entire vehicular lamp device can be efficiently illuminated in an even state.

Moreover, in the thing of this invention, the assembly | attachment operation | work (assembly operation | work) of the said LED board etc. in a housing will be performed smoothly and reliably. That is, by installing the LED substrate or the like at a holding portion formed at the upper end portion of the hollow column provided in the housing, and tightening these from above using a screw screw or the like, the LED substrate or the like Fixing (assembly) into the housing is performed. In addition, the support | pillar assembled | attached in this way, such as said LED board, consists of a hollow cylindrical form , Comprising: While it is formed so that it may have moderate rigidity and elasticity on the whole, its cross-sectional shape In FIG. 2, a plurality of arc-shaped protrusions are provided at equal intervals on the outer periphery. Therefore, the LED substrate and the like are securely fixed and held at the holding portion formed at the upper end portion of the column.

  The best mode for carrying out the present invention will be described with reference to FIGS. As shown in FIG. 1, according to the present embodiment, a plurality of LED elements (LED light emitting elements) 11 forming a light emitter are provided on the surface side so as to form a symmetrical shape and a vertically symmetrical shape. An LED substrate 1, an inner lens 5 provided so as to cover the LED element 11 provided on the LED substrate 1, a mounting bracket 6 for holding the LED substrate 1 and the inner lens 5 in an integrated state, A housing 2 that holds and accommodates the mounting bracket 6, the LED substrate 1, and further the inner lens 5 in an integrated state, a lens 3 that is provided in an opening of the housing 2 and is made of a transparent body, The present invention relates to a vehicular lamp device. In addition, in what consists of such a basic structure, in the said housing 2, the said mounting bracket 6, the LED board 1, the inner lens 5, etc. are integrated in the column shape hold | maintained in the predetermined position in the housing 2. FIG. The holding part 25 is provided.

  A description will be given of a specific configuration of the vehicular lamp device, particularly a mounting structure around the inner lens 5, with reference to FIGS. For example, as shown in FIG. 2, this is formed in a disk shape and is formed on the basis of an LED substrate 1 formed of a predetermined plastic material. A plurality of LED light emitting elements 11 and the like are mounted on such an LED substrate 1. Further, mounting brackets 6 are provided on the LED substrate 1 and are installed in the housing 2. In addition, an inner lens 5 is provided on the upper surface side of the LED substrate 1 so as to cover the LED light emitting element 11 and the like provided on the LED substrate 1. The luminous flux emitted from the LED light emitting element 11 by the inner lens 5 is diffused in a uniform state over the entire opening portion of the vehicle lamp device so that the surface of the lens 3 shines in a uniform state as a whole. become.

  Then, in the state where the LED substrate 1, the mounting bracket 6 and the inner lens 5 are integrated as described above, these are installed in the housing 2 via the cylindrical mounting portion 62 provided in the mounting bracket 6. It has become. Specifically, as shown in FIG. 2, a cylindrical mounting portion 62 provided in the mounting bracket 6 is fitted into a columnar holding portion 25 provided in the housing 2, and In this state, the screw 7 is screwed into the inner diameter portion 252 formed in the holding portion 25 from above the inner lens 5 so that the inner lens 5, the mounting bracket 6, the LED substrate 1 and the like are fastened together. It is tightened and fixed in the state.

  Next, a specific structure around the holding portion 25 to which the inner lens 5 and the like are attached will be mainly described with reference to FIGS. For example, as shown in FIGS. 1 and 3, this is mainly formed with a cylindrical holding portion 25 formed so as to stand upright from the bottom portion of the housing 2. The holding portion 25 is formed integrally with the housing 2 mainly from the same plastic material as the housing 2, for example, an ABS resin material. The holding portion 25 basically has a cylindrical shape, and the inner lens 5 is attached (fixed) by screwing the screw screw 7 into the inner diameter portion 252 while tapping it. It is something that has come to be.

  Note that the upper end portion 255 of the holding portion 25 into which the screw screw 7 is screwed is surrounded by the inner lens 5, the mounting bracket 6, the LED substrate 1, and the like, as shown in FIGS. 3 and 4, for example. Thus, the tightening force by the screw screw 7 is surely secured by the holding portion 25. Therefore, the inner lens 5, the mounting bracket 6, the LED substrate 1, and the like are securely fixed to the columnar holding portion 25. Particularly, the periphery of the upper end portion 255 of the holding portion 25 into which the screw screw 7 is screwed is basically formed in a cylindrical shape as shown in FIG. Arc-shaped protrusions 254 are provided in the radial direction with a small interval. Only the projecting portion 254 is basically in contact with the inner peripheral portions of the mounting holes 55 and 65 provided in the mounting bracket 6 and the inner lens 5. Accordingly, in principle, a gap 259 (see FIG. 4) is formed between the two, thereby absorbing thermal deformation or the like of the columnar holding portion 25 or the like.

  By adopting such a configuration, in the present embodiment, the light emitted from the LED light emitting element 11 is transmitted in all directions by the action of the inner lens 5 newly provided on the surface side of the LED light emitting element 11. Will be spread. As a result, the luminous flux emitted from the vehicular lamp device is irradiated over the entire surface of the lens 3 in a wide and uniform state. That is, in the present embodiment, by using a relatively small number of LED light emitting elements 11, the entire vehicle lamp device can be efficiently surface-emitted in an even state. Further, in the present embodiment, the LED substrate 1 on which the plurality of LED light emitting elements 11 are mounted can be shared and shared in the left and right vehicle lamp devices. Further, since the mounting bracket 6 is also symmetrical on the left and right, the manufacturing cost of the entire vehicle lamp device can be reduced.

  Further, in the present embodiment, the assembling work of the LED board 1 and the like into the housing 2 is smoothly and reliably performed. Specifically, the LED substrate 1 and the like are installed at the upper end portion 255 of the holding portion 25 made of a hollow column provided in the housing 2 (see FIG. 3), and these are screwed from above using screw screws 7. By tightening, the LED substrate 1, the mounting bracket 6, the inner lens 5 and the like are fixed (assembled) in the housing 2. In addition, the columnar holding portion 25 to which the LED substrate 1 or the like is attached in this way has a hollow cylindrical shape, and an arc shape as shown in FIG. A plurality of projecting portions 254 are provided at equal intervals. As a result, the columnar holding portion 25 as a whole has appropriate rigidity and elasticity. Then, the screw board 7 made of a tapping screw or the like is screwed into the inner diameter portion 252 of the holding portion 25 existing in the mounting portion 62 of the mounting bracket 6 having such a configuration, whereby the LED substrate 1, the mounting bracket 6, The inner lens 5 or the like is attached (attached) to the support portion 25 having a pillar shape. As a result, the efficiency of the assembling work (the assembling work) is improved.

It is a development perspective view showing the whole composition of the present invention. It is a longitudinal cross-sectional view which shows the whole structure of this invention. It is a fragmentary sectional view which shows the attachment state (structure) to holding | maintenance parts, such as an LED board and an inner lens which comprise the principal part of this invention. It is a top view which shows the structure (structure) around the holding | maintenance part provided in a housing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 LED board 11 LED light emitting element 2 Housing 25 Holding | maintenance part 252 Inner diameter part 254 Protrusion part 255 Upper end part 259 Gap 3 Lens 5 Inner lens 55 Mounting hole 6 Mounting bracket 62 Mounting part 65 Mounting hole 7 Screw screw

Claims (1)

An LED board on which a plurality of LED light emitting elements are mounted on one surface side, a mounting bracket that holds the LED board in a predetermined state and is formed of a predetermined plastic material including ABS resin, and these LEDs The substrate and the mounting bracket are stored in an integrated state, and similar to the mounting bracket, the housing is formed of a predetermined plastic material, and is provided in the housing and has a columnar form. The mounting bracket and the LED substrate are integrated and a holding portion, and an inner lens provided to cover the LED substrate at the holding portion, and the LED substrate and the mounting bracket are provided. The holding portion that is integrally held has a hollow cylindrical columnar shape, and is crossed around the upper end portion thereof. In terms of shape, an arc-shaped protrusion basically having a predetermined gap between the mounting hole formed in the mounting bracket and having appropriate rigidity and elasticity on the circumference thereof. A vehicular lamp device characterized by comprising a plurality of parts at equal intervals .

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